#*If you wish to send logs to a remote system, enter the IP address of that machine which is also running a syslog utility (it needs an open network socket in order to accept logs being sent by the router).

#*If you wish to send logs to a remote system, enter the IP address of that machine which is also running a syslog utility (it needs an open network socket in order to accept logs being sent by the router).

-

#To log firewall events, go to the Security tab and enable the appropriate options. (Note: this doesn't function in micro)

+

#To log firewall events, go to the Security tab and enable the appropriate options under Log Management. (Note: this doesn't function in micro)

That's all there is to it. DD-WRT should now be logging...either locally to ''/tmp/var/log/messages'', or remotely to the IP address you specified earlier.

That's all there is to it. DD-WRT should now be logging...either locally to ''/tmp/var/log/messages'', or remotely to the IP address you specified earlier.

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Here are some utilities you may wish to check out if you're logging remotely:

Here are some utilities you may wish to check out if you're logging remotely:

It's free of charge (if you do not need more than 100MB a month). Setup is easy with a just few of clicks.

+

You can access and see your logs from anywhere in the world by visiting Papertrail web page.

+

+

<p>Once you have a Papertrail account, the easiest way to setup the website logging in DD-WRT is to use the unique hostname and port that Papertrail provides to you for your account, and paste it into the Remote Server field.</p>

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+

<p><ol>

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<li>Go to the '''Settings''' tab in Papertrail</li>

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<li>Click '''Log Destinations''' tab</li>

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<li>Copy the url and port number provided (i.e. logs2.papertrailapp.com:xxxxx)</li>

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<li>Go to the Services tab in DD-WRT</li>

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<li>Enable Syslog on the Services tab</li>

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<li>Paste the url from step 3 into the '''Remote Server''' field for Syslog</li>

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<li>Apply changes, and your router will begin sending logs to the Papertrail website</li>

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</ol></p>

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==Remote logging with Logentries==

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[https://logentries.com Logentries] is an easy-to-use, self-hosted log management and analytics service for teams of all sizes.

==Displaying logs in your web browser==

==Displaying logs in your web browser==

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create a symbolic link in /tmp/www

create a symbolic link in /tmp/www

-

ln -s /tmp/var/log/messages /tmp/www/log.html

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ln -s /tmp/var/log/messages /tmp/www/log.html

now go to:

now go to:

-

http://192.168.1.1/user/log.html

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http://192.168.1.1/user/log.html

(credits to kuthulu for that tip)

(credits to kuthulu for that tip)

+

+

If you are on ddwrt v3.0 on a kernel 3.10 and above, you can see your logs by typing:

+

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http://192.168.1.1/Syslog.asp

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+

in your web browser (assuming 192.168.1.1 is IP of your ddwrt router)

====micro versions====

====micro versions====

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As noted in the Setup section, the logfile in '''micro''' currently does not show any firewall events, unfortunately.

As noted in the Setup section, the logfile in '''micro''' currently does not show any firewall events, unfortunately.

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+

==Saving the logfile across reboots==

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If you have some external storage such as a USB hard drive or SD/MMC card, you can probably use a [[CRON]] job and/or shutdown script to copy the logfile there.

+

+

Another option is to restart the syslog daemon, telling it to save the logfile in a new place. For example:

+

+

killall syslogd

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syslogd -L -s 8192 -O /opt/var/log/messages<br>

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''#credits to frater for the commands''

+

+

Note: If you choose to restart syslogd, you'll probably want to do it in a startup script.

If you wish to send logs to a remote system, enter the IP address of that machine which is also running a syslog utility (it needs an open network socket in order to accept logs being sent by the router).

To log firewall events, go to the Security tab and enable the appropriate options under Log Management. (Note: this doesn't function in micro)

That's all there is to it. DD-WRT should now be logging...either locally to /tmp/var/log/messages, or remotely to the IP address you specified earlier.

Papertrail provides hosted log management, live in minutes.
It's free of charge (if you do not need more than 100MB a month). Setup is easy with a just few of clicks.
You can access and see your logs from anywhere in the world by visiting Papertrail web page.

Once you have a Papertrail account, the easiest way to setup the website logging in DD-WRT is to use the unique hostname and port that Papertrail provides to you for your account, and paste it into the Remote Server field.

Go to the Settings tab in Papertrail

Click Log Destinations tab

Copy the url and port number provided (i.e. logs2.papertrailapp.com:xxxxx)

Go to the Services tab in DD-WRT

Enable Syslog on the Services tab

Paste the url from step 3 into the Remote Server field for Syslog

Apply changes, and your router will begin sending logs to the Papertrail website

Micro versions have a stripped down version of BusyBox, so it might not include the ln command used above. In that case, you can use a different method to view the logs from within your browser, shown below.